/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/nested_structure_ptr-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 16:18:26,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 16:18:26,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 16:18:26,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 16:18:26,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 16:18:26,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 16:18:26,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 16:18:26,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 16:18:26,160 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 16:18:26,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 16:18:26,162 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 16:18:26,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 16:18:26,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 16:18:26,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 16:18:26,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 16:18:26,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 16:18:26,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 16:18:26,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 16:18:26,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 16:18:26,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 16:18:26,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 16:18:26,179 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 16:18:26,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 16:18:26,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 16:18:26,187 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 16:18:26,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 16:18:26,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 16:18:26,205 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 16:18:26,206 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 16:18:26,235 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 16:18:26,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 16:18:26,237 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 16:18:26,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 16:18:26,238 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 16:18:26,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 16:18:26,238 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 16:18:26,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 16:18:26,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 16:18:26,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 16:18:26,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 16:18:26,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 16:18:26,241 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 16:18:26,241 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 16:18:26,242 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 16:18:26,242 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 16:18:26,242 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 16:18:26,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 16:18:26,242 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 16:18:26,243 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 16:18:26,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 16:18:26,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 16:18:26,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 16:18:26,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 16:18:26,244 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 16:18:26,244 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 16:18:26,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:18:26,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 16:18:26,245 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 16:18:26,245 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 16:18:26,597 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 16:18:26,619 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 16:18:26,623 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 16:18:26,624 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 16:18:26,624 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 16:18:26,625 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/nested_structure_ptr-2.i [2020-07-21 16:18:26,701 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52c622865/f57f761c29844e7fb046b7e8b5302ab6/FLAGfcac4348d [2020-07-21 16:18:27,186 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 16:18:27,187 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/nested_structure_ptr-2.i [2020-07-21 16:18:27,198 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52c622865/f57f761c29844e7fb046b7e8b5302ab6/FLAGfcac4348d [2020-07-21 16:18:27,511 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52c622865/f57f761c29844e7fb046b7e8b5302ab6 [2020-07-21 16:18:27,521 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 16:18:27,524 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 16:18:27,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 16:18:27,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 16:18:27,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 16:18:27,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:18:27" (1/1) ... [2020-07-21 16:18:27,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b6517b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:18:27, skipping insertion in model container [2020-07-21 16:18:27,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:18:27" (1/1) ... [2020-07-21 16:18:27,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 16:18:27,564 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 16:18:27,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:18:27,811 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 16:18:27,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:18:27,846 INFO L208 MainTranslator]: Completed translation [2020-07-21 16:18:27,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:18:27 WrapperNode [2020-07-21 16:18:27,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 16:18:27,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 16:18:27,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 16:18:27,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 16:18:27,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:18:27" (1/1) ... [2020-07-21 16:18:27,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:18:27" (1/1) ... [2020-07-21 16:18:27,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:18:27" (1/1) ... [2020-07-21 16:18:27,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:18:27" (1/1) ... [2020-07-21 16:18:27,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:18:27" (1/1) ... [2020-07-21 16:18:27,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:18:27" (1/1) ... [2020-07-21 16:18:27,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:18:27" (1/1) ... [2020-07-21 16:18:27,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 16:18:27,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 16:18:27,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 16:18:27,967 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 16:18:27,968 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:18:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 16:18:28,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 16:18:28,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 16:18:28,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 16:18:28,028 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 16:18:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 16:18:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 16:18:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-21 16:18:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-07-21 16:18:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-07-21 16:18:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 16:18:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 16:18:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 16:18:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-21 16:18:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 16:18:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 16:18:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 16:18:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 16:18:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 16:18:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 16:18:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 16:18:28,273 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 16:18:28,273 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 16:18:28,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:18:28 BoogieIcfgContainer [2020-07-21 16:18:28,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 16:18:28,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 16:18:28,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 16:18:28,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 16:18:28,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:18:27" (1/3) ... [2020-07-21 16:18:28,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff4bb9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:18:28, skipping insertion in model container [2020-07-21 16:18:28,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:18:27" (2/3) ... [2020-07-21 16:18:28,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff4bb9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:18:28, skipping insertion in model container [2020-07-21 16:18:28,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:18:28" (3/3) ... [2020-07-21 16:18:28,287 INFO L109 eAbstractionObserver]: Analyzing ICFG nested_structure_ptr-2.i [2020-07-21 16:18:28,299 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 16:18:28,308 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 16:18:28,327 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 16:18:28,367 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 16:18:28,368 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 16:18:28,368 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 16:18:28,368 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 16:18:28,368 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 16:18:28,368 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 16:18:28,369 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 16:18:28,369 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 16:18:28,392 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-07-21 16:18:28,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-21 16:18:28,401 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:18:28,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:18:28,403 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:18:28,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:18:28,413 INFO L82 PathProgramCache]: Analyzing trace with hash -715594688, now seen corresponding path program 1 times [2020-07-21 16:18:28,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:18:28,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853040433] [2020-07-21 16:18:28,424 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:18:28,640 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:18:28,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:18:28,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 36 conjunts are in the unsatisfiable core [2020-07-21 16:18:28,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:18:28,836 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:18:28,837 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 55 [2020-07-21 16:18:28,841 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:18:28,848 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:18:28,852 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:18:28,935 INFO L624 ElimStorePlain]: treesize reduction 8, result has 97.4 percent of original size [2020-07-21 16:18:28,940 INFO L440 ElimStorePlain]: Different costs {1=[|v_#memory_int_5|], 6=[|#memory_$Pointer$.base|, |#memory_$Pointer$.offset|], 11=[|v_#memory_$Pointer$.base_5|, |v_#memory_$Pointer$.offset_5|]} [2020-07-21 16:18:28,946 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 16:18:28,948 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 16:18:28,949 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 16:18:28,994 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:18:29,003 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 16:18:29,025 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:18:29,031 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-21 16:18:29,050 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:18:29,069 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:18:29,070 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2020-07-21 16:18:29,074 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 16:18:29,084 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 16:18:29,090 INFO L544 ElimStorePlain]: Start of recursive call 6: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-07-21 16:18:29,139 INFO L624 ElimStorePlain]: treesize reduction 4, result has 88.2 percent of original size [2020-07-21 16:18:29,150 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-21 16:18:29,153 INFO L544 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-07-21 16:18:29,163 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:18:29,164 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 5 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:18:29,165 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 7 variables, input treesize:317, output treesize:3 [2020-07-21 16:18:29,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:18:29,203 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:18:29,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853040433] [2020-07-21 16:18:29,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:18:29,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 16:18:29,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692365939] [2020-07-21 16:18:29,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 16:18:29,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:18:29,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 16:18:29,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 16:18:29,237 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 5 states. [2020-07-21 16:18:29,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:18:29,301 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2020-07-21 16:18:29,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 16:18:29,303 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-21 16:18:29,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:18:29,312 INFO L225 Difference]: With dead ends: 25 [2020-07-21 16:18:29,312 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 16:18:29,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 16:18:29,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 16:18:29,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 16:18:29,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 16:18:29,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 16:18:29,349 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-07-21 16:18:29,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:18:29,350 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 16:18:29,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 16:18:29,351 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 16:18:29,351 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 16:18:29,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:18:29,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 16:18:29,617 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 16:18:29,618 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 16:18:29,618 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 16:18:29,618 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 16:18:29,618 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 16:18:29,618 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 16:18:29,619 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 16:18:29,619 INFO L268 CegarLoopResult]: For program point L34-1(line 34) no Hoare annotation was computed. [2020-07-21 16:18:29,619 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 27 36) the Hoare annotation is: true [2020-07-21 16:18:29,619 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 27 36) no Hoare annotation was computed. [2020-07-21 16:18:29,620 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 27 36) no Hoare annotation was computed. [2020-07-21 16:18:29,620 INFO L264 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (= 4 |main_#t~mem4|) [2020-07-21 16:18:29,620 INFO L268 CegarLoopResult]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2020-07-21 16:18:29,620 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2020-07-21 16:18:29,620 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2020-07-21 16:18:29,621 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-21 16:18:29,621 INFO L268 CegarLoopResult]: For program point L3(lines 3 5) no Hoare annotation was computed. [2020-07-21 16:18:29,621 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-07-21 16:18:29,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 04:18:29 BoogieIcfgContainer [2020-07-21 16:18:29,628 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 16:18:29,631 INFO L168 Benchmark]: Toolchain (without parser) took 2108.25 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 104.4 MB in the beginning and 94.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 71.4 MB. Max. memory is 7.1 GB. [2020-07-21 16:18:29,632 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 16:18:29,633 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.34 ms. Allocated memory is still 139.5 MB. Free memory was 103.9 MB in the beginning and 93.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-21 16:18:29,634 INFO L168 Benchmark]: Boogie Preprocessor took 118.05 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 93.7 MB in the beginning and 178.5 MB in the end (delta: -84.8 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-07-21 16:18:29,635 INFO L168 Benchmark]: RCFGBuilder took 311.23 ms. Allocated memory is still 201.3 MB. Free memory was 178.5 MB in the beginning and 163.0 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. [2020-07-21 16:18:29,636 INFO L168 Benchmark]: TraceAbstraction took 1350.00 ms. Allocated memory is still 201.3 MB. Free memory was 162.3 MB in the beginning and 94.8 MB in the end (delta: 67.5 MB). Peak memory consumption was 67.5 MB. Max. memory is 7.1 GB. [2020-07-21 16:18:29,640 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 322.34 ms. Allocated memory is still 139.5 MB. Free memory was 103.9 MB in the beginning and 93.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.05 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 93.7 MB in the beginning and 178.5 MB in the end (delta: -84.8 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 311.23 ms. Allocated memory is still 201.3 MB. Free memory was 178.5 MB in the beginning and 163.0 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1350.00 ms. Allocated memory is still 201.3 MB. Free memory was 162.3 MB in the beginning and 94.8 MB in the end (delta: 67.5 MB). Peak memory consumption was 67.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 5 SDslu, 31 SDs, 0 SdLazy, 8 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 6 NumberOfFragments, 8 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 135 SizeOfPredicates, 17 NumberOfNonLiveVariables, 92 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...